Chemistry NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 7 PCB Single Correct MCQ
Published on: August 13, 2026

EcoRI is a type II restriction enzyme, which is isolated from E. coli while Hind II is also type II restriction enzyme, which is isolated from Haemophilus influenzae. The recognition sequences of EcoRI and Hind II are

A
GAATTC and GTPyPuAC, respectively
B
CAPuPyTC and GAATTC, respectively
C
AATTCG and CCGAAT, respectively
D
CCGGTT and TTAGGG, respectively

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The correct answer is:
A

EcoRI cuts the DNA between based G and A only when the sequence GAATTC is present in the DNA. The restriction endonuclease Hind II always cuts the DNA molecules at a GTPyPuAC Pyrimidine, Purine) point.

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